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Location Egypt, El Fayoum
Central coordinates 30o 22.00' East  29o 13.00' North
IBA criteria A1, A4i
Area 71,000 ha
Altitude
Year of IBA assessment 2001

Nature Conservation Eqypt (Affiliate)



Site description Wadi El Rayan was originally an arid desert depression located to the south-west of Fayoum, with an average elevation of 43 m below sea-level and a maximum depth of 64 m below sea-level. As of 1973, excess drainage water from Fayoum was diverted into the depression, flooding large parts of it. Two large lakes were formed as a result. The first lake reached its current level of 5 m below sea-level in 1978. The second lake, which lies at a lower elevation, has a current estimated water-level of 20 m below sea-level and is still in the process of filling. It is expected that the water-level in the lake will be allowed to reach 13 m below sea-level. About 0.25 km³ of drainage-water reaches the lakes of Wadi El Rayan annually (salinity 1 g/l). This is carried through a canal and a tunnel, which link the first lake and El Wadi Drain and flows from the first lake to the second via a shallow, swampy canal and a small waterfall. Because water-levels in the first lake have been stable for a considerable length of time, a very dense growth of Phragmites and Tamarix has developed along the shores of this lake. In contrast, the second lake has scant cover along its shores because of the constantly, though slowly, rising level of water in it. Salinity is also rising slowly in the second lake (which has no outflow) as a result of evaporation. The salt-level in the lake is currently about 2.5 g/l, but it is only a matter of time before it becomes as saline as Lake Qarun. Salinity is expected to remain stable in the first lake, since it is constantly flushed. The lakes of Wadi El Rayan produced an average of 477 tonnes of fish annually between 1980 and 1990, composed mostly of Tilapia sp. and Mugil sp.

To the west of the lakes of Wadi El Rayan is a further, shallower, sandy depression that supports three natural springs and extensive desert scrub. A limestone escarpment surrounds the depression on all sides except the east, where it is closed off by a series of high longitudinal dunes. The vegetation is dominated by shrubs of Alhagi, Nitraria, Calligonum and Tamarix. This is an excellent and rare example of an undeveloped Saharan oasis.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Ferruginous Duck Aythya nyroca winter  1999  present  A1  Near Threatened 
Purple Swamphen Porphyrio porphyrio breeding  1999  100 breeding pairs  A4i  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Wadi Al-Hitan (Whale Valley) World Heritage Site 20,015 protected area contained by site 25,900  
Wadi el Rayan Natural Monument 351,268 is identical to site 71,000  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Artificial - aquatic   major
Desert   major

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
hunting -
nature conservation and research -
water management -
other -
Notes: Falcon-catching.

Other biodiversity Mammals: four threatened mammals are found in the desert habitats of Wadi El Rayan. Gazella leptoceros (EN) occurred until the mid-1980s, but has probably become locally extirpated. Gazella dorcas (VU) is still found in the area in small numbers, but is rapidly declining. Both Vulpes zerda (DD) and Vulpes rueppelli (DD) are scarce and are also declining due to illegal hunting.

References Euroconsult (1992b).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Wadi El Rayan Protected Area. Downloaded from http://www.birdlife.org on 26/10/2014

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